You know there is something called Chocobo Hot and Cold and you can get Ragnarok from it for Steiner to learn Shock and deal 9,999 damage. You can also get most of the other Ultimate Weapons. That's all you need. Just make sure you have good abilities like Auto-Life, Auto-Haste, and Auto-Regen equipped. I'd use Zidane, Steiner, Freya, and Garnet (for healing). You can steal a Dark Matter and Robe of Lords from him too.
